(Blamed the transmission; must've been a pre-G50)

Man driving Porsche with missing tire arrested for DUI

"...According to a press release, pedestrians stopped and stared as the vehicle went by, 'making a loud grinding noise and emitting lots of sparks.'"

"When the trooper stopped the vehicle and asked Stephenson for his driver's license, Stephenson quickly informed the trooper that his transmission was going out."

http://www.king5.com/news/local/Man-...-80448337.html

esheckler (in Seattle, on the lookout for Porsche tricycles)
'68 912swt
ex '62 notchback, '63 S90, '64SC