My cottonwood is in full fertility mode.  The touchless car wash
won't even remove the seeds, never mind the glue from my wife's black
Mazda.  Now of course my Westfalia is still in winter storage until
the onslaught is over but the Mazda ain't so lucky.  Any suggestions
on how to remove the sap?  Commercial polishers don't work too well.
The only thing I've found that's good is nail polish remover.  I
suspect that may remove a little more than I'm intending though ...

Any thoughts?
Thanks
Jeff