I am still looking to purchase a 1990 or 1991 BMW 735iL and i am wondering what is the typical life span of this car? How long (miles, etc.) before the car is unusable? How many miles until the car is not responsive or does not handle well or is a problem to maintain? I noticed many people that contribute to this messageboard own models similar to this one (E32s) so I was hoping they could respond from their personal experiences.. However, any info would be greatly appreciated!! Thank you.