
It would be tempting to call this year's Tokyo Motor Show an entirely domestic affair, but that's not entirely accurate, as a few smaller specialty automakers like Lotus and Alpina took advantage of a surplus of available square footage by nailing down prime floor space for themselves. As a belated addition to the festivities, Caterham, England's merry band of Colin Chapman acolytes marked the occasion with the world debut of its CSR 175.
The new model slots in as a new bottom rung to the CSR franchise, which is paradoxically the marque's premium range. The 175 joins the range's existing trio of variants, the 200 bhp CSR200, the 260bhp CSR260 and the full-house 260 bhp CSR Superlight. If you're paying attention, you can therefore deduce that the new addition possesses 175 bhp. That may not sound like a lot of power, but in a car that weighs as much as an anorexic gnat, we reckon the Ford-sourced 2.3-liter Duratec four-pot will still be plenty entertaining.
Either way, traditional minimalist roadsters like the Se7en have never been about terminal velocity, they've always been predicated on leech-like cornering and giant-kiling acceleration. And given that the 175 shares the CSR family's stiffer spaceframe chassis, updated suspension and refined aerodynamics, Caterham's latest should continue corner like a cat on carpet. And given the vast empty expanses of the stuff here at the show, we'd be tickled if someone handed us the keys for a bit of after-hours fun...

The same things that makes the cars from British boutique automaker Caterham sporty and fun to drive could also potentially make them excellent choices for alternative powertrains. There's plenty of available real estate under the hood, a simple rear-wheel drive chassis and, above all else, a distinct absence of weight.
As such, it's not surprising to hear that Caterham is looking into both hybrid and fully electric drivetrains. According to Autocar, Caterham chief Ansar Ali said at the Tokyo Motor Show that his company would unveil an eco-friendly prototype before the end of the year. Both the hybrid and electric powertrains will be sourced from unnamed manufacturers.
Further, Caterham is planning a one-make race series in 2011 to show off its new green sportscar, which may well be followed up in 2012 with a production model if sufficient demand is found. Performance will reportedly to be just as sprightly in EV form as it is with the firm's normal gasoline-fed engines






After getting teased and then leaked on, we officially have details on Caterham's new Superlight R500. The stats are as insane as we predicted, with a naturally aspirated 2.0-liter Ford Durtec sending 263 hp and 177 lb.-ft. of torque to the rear wheels through either a six-speed manual or a six-speed sequential gearbox equipped with launch control. With 520 hp per ton (it weighs 506 kg, or 1,116 pounds) the R500 can rocket to 60 in exactly 2.88 seconds, but that's only part of the performance equation.
Caterham fitted the R500 with a "Carbon Induction Airbox," Eibach springs and dampers pulled from the C400 Caterham racer, four-piston calipers in front and two-piston rotors out back, Avon C500 track-day rubber, and replaced many of the components with aluminum and carbon fiber to shed 9 kgs from the chassis. The R500 is also equipped with a new electronic IP nestled into a full carbon fiber dash. If you're in the UK and have £36,995 to spare, you could do worse for you next track-day excursion.


Caterhams have always been the model for minimalist motoring and it's rare that owners have been wanting for more motivation, but RS Performance has answered the call of a few owners that want insane power to match the Caterham's spartan looks.
Packing a supercharged 2.4-liter, V8 driving the rear wheels through a six-speed gearbox, RS Performance is giving well-heeled drivers 550 hp (at 10,000 rpm!) to simultaneously dry their hair and wet their pants. With a curb weight of almost 1,150 pounds, that means a power to weight ratio of around 1000 hp per ton and a 0-60 time of under three seconds.
Getting that grunt to the ground is difficult, at best. With the majority of the body panels being replaced with carbon fiber bits, along with an F1-style front splitter, steering wheel and Kevlar seats, the lack of mass is something drivers will have to overcome. Thankfully, the chassis, sticky rubber and traction/launch control should keep things in check.
If the £115,000 cost of entry for the supercharged version is a bit more than your wallet can bear, a naturally aspirated variant is available as well producing a "paltry" 380 hp. Included in the cost of the RST-V8 is a two-day driver training course when you take delivery. Good call Caterham.
