Posts: 2,526
Threads: 75
Joined: Nov 2008
I like the idea of it as a bomb and as a "race" too for that matter.
And about bailing or using commands to avoid it, just disable the commands. And for bailing, just explode the vehicle and set the player's health to 0 if they try to bail whilst in a vehicle with an activated speed-bomb. Although that might make it overpowered, seeings as the person in there have zero chance of surviving.
About the activation:
bomb, should it activate and send the player a message informing them about the bomb as soon as they pass 50Km/h?
race, give the player a time-limit of about 5 seconds to speed up then they have stay above 50Km/h.
About the detonation time-limit:
I think ten seconds is too much, five is enough. I took a coach today and drove around Las Venturas (no, not along the strip) and checked the speedometer like every second. And I don't think I went below 50 once.