Auto parts stores have products made for just that. But I would use lacquerer thinner. You'll have to re-wax anyway. In the future, on long hauls use Saran (plastic) wrap on the leading edges, bow and windscreen. It sticks great even at highway speeds. (dollar store tip) Peel it off and throw it away. We get love bug season down here. These things are black bugs that swarm everywhere and will take paint off your car if you let them stay on too long. On a trip to the Keys last month we forgot the wrap and spent two hours scrubbing black splattered bug goo of my buddies Fountain. The windshield and radio box and T top was 1/4' thick of dead black bugs. On the trip home we wrapped it. No problem. Wad up the bugs, dirt and tar and throw it away.
I know.... (blushing).... Jazinious!