Hacker Brushless A200-8 - Aero Model Inc.
With this:
HobbyKing R/C Hobby Store : Turnigy Fatboy 300A ESC 5~15S - (OPTO)
110kv*48(if you do 48volts)=5280rpm
Of I remember right, stock is 3200rpm which gives around 30+ mph
5280/3200=1.65
1.65*30+=49.5+mph
So 50mph with 15kw or 20hp peak in a car that weighs about 1/2 of a ton...and in comparison to the stock 3.5hp, you're really having some fun...
I have converted a Razor E300 to have a brushless setup. Stock it didn't really move, and was obviously pointless. Now:
-Turnigy Rotomax 1.60
-9s (37.8 volt full charge, 33.3 volt nominal) 12ah lipos
-Range around 10± miles
When geared up I hit 65+, now its around 35mph top speed. Stock was supposedly 15, but realistically 7-8mph was peak.