I'm going to continue driving my MBs despite their aluminum suspension and other parts. I will also continue to replace steel and iron parts on my Formula F race car whenever possible.

You better sell your Bimmers since they have all those aluminum parts which will always fail. But it is highly unlikely you will ever find any car that does not have them.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.