that was Larry Storch
who impersonated Cagney. I was searching for this show, not that I liked it, but I remembered it, and I liked Storch in it. 5 guys in a truck, which only two can drive, while 3 hide in the tank, and I think one is the brains. One old guy dies of a heart attack. A killer type whose face is known wants to get up front, but the protaganist (I thought it was James Darren, maybe not), won't let him. In the end, the police catch on, and set up a road block. To say more would be a spoiler.
Now go away or I shall taunt you a second time