yes they put clear-coat on every car finish I'm aware of. I hope you've waxed it at some point before this incedent (rub-in buff-off, not the sprayed in with the automatic-car-wash).
goof-off or 'oops' (I prefer the oops brand but they are very simular) works well but like rip said it can also work as a solvent on the paint if your not careful.
wash it good to first and get as much as you can you want to use strong soap and try to wash the wax off and hopefully take the sap with it. (again, as rip already mentioned dawn dish washing soap works pretty well, I preffer 'spic-n-span' or a simular floor cleaner. find one that says on the bottle 'removes wax build-up')
you can use the goof-off or oops on any that is left after washing.
don't squirt that stuff on your paint though, just put a rag over your finger-tip, put a little on the tip of your finger and lightly rub. have another soapy wet rag ready and wash the spot as soon as you are done, those products are solvents and you don't want to leave them on the paint. (btw- if left to long it can actually have an etching effect on your windshield)
the windshield glass ussually stays kinda streaky even after thouroughly cleaned. sometimes it will look good dry but the sap marks show back up in the rain. the best way I've found to get the sap (or anything else) off the glass strea-free, is to use tobacco. just tear up a couple of cigs, dump it into the midle of a small cloth, add just enough water to get the tobacco wet, and scrub the window with the tobacco(the rag is just to hold the mess together). I've found nothing that works better on glass.
