If you're looking for a stripped-down, lightweight car to tear up the track, you can't go wrong with the Ariel Atom or BAC Mono. The latter was only made available in the US last year, but let's also not forget the mid-engined KTM X-Bow which is also now sold in the US. It's the one and only car that the Austrian motorcycle company builds, packing an Audi-sourced 2.0-liter turbocharged engine that allows it to sprint from 0-62 mph in 3.9 seconds and top out at 135 mph.

There's also an insane GT4 racing variant of the KTM X-Bow that made its competition debut in 2015, and now it's been updated for the 2018 season with a slew of changes designed to keep running costs down. Because that's what we all look for in a thoroughbred track toy. KTM has once again teamed up with Reiter Engineering based in Germany to produce the 2018 X-Bow GT4, which has undergone a "significant overhaul." "Although we already have a GT4 vehicle that offers one of the best value for money – just take a look at the VLN where there's no other car that runs faster lap times for less money," Reiter Engineering boss Hans Reiter explained.

We want to further reduce the costs for the teams and the drivers with these updates." Among the improvements include a more powerful Holinger transmission, which is designed to run twice as long as the previous unit. Chassis components such as the wishbones and the GT3 central locking wheel hubs, have also been designed to last longer. As a result of these changes, Reiter Engineering claims the running costs have been reduced to $7.50 per mile. The 2018 KTM X-Bow GT4 also features a new Motec ECU, new wiring, and a new user-friendly control panel in the cockpit. Since making its competition debut in 2015, the KTM X-Bow GT4 has racked up several race victories and titles.

Among these victories include the GT4 European Series, Pirelli World Challenge, VLN, China GT, Thailand Superseries, Australian GT, and more. More than 60 KTM X-Bow GT4s currently compete worldwide. Reiter Engineering is now taking orders for the 2018 KTM X-Bow GT4 with prices starting at $183,438. Only 15 are planned for production in spring 2018, while production in February is completely sold out.