There are several delis I frequent which will not acknowledge you until you are off your phone. If you are on the phone, you get no service! I think its a great idea. I will be a happy man when cell phone use while driving is made illegal.

Worst roads? Its hard not to hate the beltway.

Mike

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'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E