I played I '76 so much, I could take the worst vehicle in the game, and run the table in just about any online session.
I had a secret technique that few people caught on to-
As many forward firing 7.62 as possible
50 cal guided turret
Rear firing guided missile
Run straight at the target vehicle
Unload the 7.62's while driving toward the target, interspersed with guided 50 cal
After gaining speed, and just at opponent's weapons range, switch off ignition
(opponent looses guided weapon lock)
After passing, keep the 50 cal going while launching the rocket.
Almost 100% success rate no matter what the opposing vehicle or armament was.
I cold use the postal jeep, the van, or my favorite, the 71-74 "Charger".
It was a little different in the campaign, as the Mech Warrior game engine liked to have the AI vehicles circle, making a straight on attack almost impossible.
IIRC that game made a bit of tech history- the first to allow dynamic joins/unjoins.
Before that you had to restart the host and wait for all the players before starting the game, and if anyone unjoined, they couldn't get back in.