I don't know this for sure, but I'd bet there is something in the motor vehicle code regarding driving in reverse on a public street (except for backing out of a space/driveway, of course.)

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1994 C280, dark green metallic
105k miles

1991 190E 2.6, Black
191,500 miles
(sold to another forum member)

2003 Chevy Tahoe LT, Redfire Metallic
105k miles

1989 Mustang GT Cobra Convertible
43k miles