it was a long time ago, but yea im pretty sure i saw a flying truck back in 1.46 cwc, because i never had resistance, in fact it hadnt even been released then
it probably wasnt as advanced as your flying truck cheat, but somehow a truck was moving in the air
i never did find any cheats for the original cwc, and i stopped playing ofp soon after, i only recently started playing res this year, because i found out about this site