SetSpeed( <speed>, <acceleration>, <deceleration> )
Module: Vehicles
Summary:
Sets the speed and acceleration for this vehicle.
Call this on:
a vehicle
Example:
self SetSpeed( 60, 15, 5 );
Required Args:
1 : <speed> The speed of the vehicle in miles per hour
Optional Args
1 : <acceleration> The acceleration of the vehicle in miles per hour per second
2 : <deceleration> Deceleration. If not specified, set to be equal to half of accleration