A Top Speed race is found only in the Story mode. Win one to unlock this trophy. To win you have to hold the displayed Speed Limit for the longest time. You have 3 attempts. A new limit will appear after successfully holding the previous one for 10 seconds. After your opponents drop out, you will win the race. There are 5 of those races and during one of those, make sure you try your best to obtain the missable "250 km/h speed limit" trophy.
Note: See "250 km/h speed limit" for additional information.
The first opportunity to get this in the Story mode is the third race event given from "The Jokers" car Club:
Message: - Proof
Max, we have a bet with the brothers, trying to find out whose car is the fastest. So Bear says your car is the fastest now, as he installed spmething fantastic in it. Is this true? Let's solve this...
Named: Top Speed race
Vs: Bear & Proof