I love my 1982 240D MBZ except for one problem I keep having time to time. The problem is the following: I drive the car 70-75mph for about 20min, parkit and come back 30-45min later, the car refuses to start. All electrical gadgets work fine, just won't crank. The first time, the tow truck driver and I looked everywhere thinking that the transmission was not in park, but that was not it. After towing the car to the service center, the guys there just put the key in the ignition and started the car right up. The second time, I had the car towed to my home and the next day, the car started as if nothing happened. Now when it refuses to start, I just leave it alone for 3 hours and come back later to get it. However this is getting quite expensive taking the cab. I must admit it only happen 1 time every quarter on average. I had the car looked at but nobody seems to know the cause. had anybody else experienced the same thing? Can you help me diagnose this 240D beast with 272,000 miles?