Those are two of the 12(i think its twelve) hacks found in the trainer by GMZ.
Im going by memory because now theres a new anti-cheat on the server-side and it got my good account so im playing clean with my current account. Lost my veyron..
Theres tank mode, ghost mode, lobby kick, the speedhack you mentioned which is nitro on demand by pressing page up, the pursuitbot, the wall hack, car changer hack, team escape hack, drunk driver(auto-drive), the autofinish, perfectstart(when you see a car bouncing at the starting line or when you drive over a car in freeroam they are using perfectstart) and a couple of more but i cant remember what they were.
It doesnt matter any more because the new system detects all that. First you get an authentication error then a few hours later you get a popup that says you have been peranently banned. It cost me 70 cars to find that out too.
For the record i dont condone the use of hacks in multiplayer i just happen to feel that what you do in single player mode isnt hurting anyone. The game takes literally years to play it thru and get all the achievements. I was farming money and opening free car slots as soon as i learned how and it still took over a year to get the veyron. I can only imagine how long its gonna take playing it straight.
-edit- the name hider which covers the name up during the race. Useless because when you report that it shows the name and EA see the name anyway. and the only other one i can think of is fast power ups.