There was a doofus on the track last night...... and it was me

I thought my car was handling a bit funny, despite doing nothing to it, except re-calibrate the speedo.
Unfortunately I forgot that I had previously set the throttle to 75% due to my inability to handle a 6.5T, but obviously the reset speedo recognised 75% on the tx throttle as 100%.
The upshot was a car that was way too fast for it's driver, hitting a jump badly thus flying into another car, which was also airborn but travelling in the other direction, and at least 4 spectators going "ooff, that sounds expensive".
Cost to me: a gearbox, 4 screws, a rear chassis plate plus a front arm.
The lesson I learned last night: Whenever resetting your speedo, make sure your tx is set to 100%.
On another note, what car did I hit?, the reason I ask is because I want one!!