We're not impressed by scale speed, we're impressed by real speed. That's why the Traxxas XO-1 radio control car we found via Gizmodo is much more worthy of our attention.
No need for scale speed when your RC car can hit a genuine, full-scale 60mph in only 2.3 seconds - that's 0.2 seconds quicker than the fastest production car on sale, the Bugatti Veyron. The XO-1 can also break 100mph, a speed that's scary regardless of the size of whatever's bearing down on you.
In fact, the speed makes it positively dangerous, which is why Traxxas supplies a long list of warnings with the XO-1, chief among which is that you should only use it on a closed course - such as the Texas Motor Speedway featured in the video.
Power is provided by electric motor, supplied by a set of 5000 mAh lithium-ion polymer batteries. This sort of power is rarely cheap, and the XO-1 will set you back $1,100.
As some of the commenters point out you can put yourself in equal peril by buying a used sports bike for not a lot more and still go to work on it... but of course, the RC car has a higher scale speed...