So folks, we have a problem.

Ruby is dirty
For a while there I bringing her in for service for a faulty sun screen and they'd run her through the new-car-wash every time. Now that is fixed and she's about 6,000 miles short of an oil change.
Unfortunatly, I live in an apartment in the city with no access to a hose. We do have those "wash-it-yourself" car washes... but what is the general consensus on the drive-thru car washes

? Would it scratch Ruby's shiny red pannels?
I have to admit- in addition to them being functional, the drive thru's are kind of fun too. I'm tempted... but I don't want to hurt her.