Straightline takes a look back at the BMW E28 M5BMW invited members of the media out to take a mint 1988 E28 M5 out along the California Coast. BimmerBoost did not get its invitation as I lost the key to my mailbox and it is no doubt sitting in there. Anyway, the E28 M5 is the original M5. With a motor derived from the M1 supercar, it is a car that will always be held in high esteem by the M faithful. Read Edmund's Straigthtline take below.