I bring a pack of stuff, brushes, quik detailer and what-not. Give a good wash before you leave and they'll be time to clean the cars up a bit. Last year I started scraping bugs off the front and before you knew it 4 people came over and were cleaning my car along with JD who actually polished my headlights. You can borrow my stuff too if you need anything!
I will be going across the land of many bugs - Nebraska and Iowa - So thanks Brentalan -
and JDS353 - Amante washes like most cars I have owned - I just can't take him through automatic car washes - he is a convertible...
And Rich - there is nothing wrong with a clean car - Tux and Amante will be the handsomest boys there... including human company