Most (German) automobiles are limited to 250km/h (155mph) if they are able to reach over that speed. Car manufacturers have made a “gentleman agreement” with the government to limit there cars instead of a maximum speed given by the government on public roads. Karreman Engineering is able to remove the vehicle speed limiter from you Engine Control Unit of your car giving you the absolute speed your car can drive.
Were speed limiters are mainly associated with sports cars it is also possible that your van or truck is limited to a specific speed. Also these speed limiters in vans and trucks can be removed or set higher or lower to your demands.