1.3.0.25
No mods
When detonating enough planted explosives to set a truck alight while travelling at a speed over 70 the explosives will detonate and kill the driver but not set the truck alight or destroy it. Detonating the same amount of explosives on a truck that is either stationary or travelling at a speed under 60 will destroy or set the truck alight.
Place a transport tuck at one end of the airfield north of saint phillipe
Place 15 explosives on the bonnet of the truck and connect to a detonator
Retreat to a safe distance and detonate the explosives (this either immediately destroys the truck or sets it on fire)
Place another truck at the end of the airfield and place 15 explosives on the bonnet of the new truck, connecting each to a detonator
Get in the truck and start driving towards the other end of the airfield
Once you reach a speed of 70 detonate the explosives
Compare the difference in how the explosives effect the truck when stationary and at a speed of 70
I tested this on both US and soviet trucks with both c4 and tnt with no difference in results. I assume this effects every truck type but only tested the transport, fuel and construction trucks myself.