I'm flying commerical and renting a car. I will NOT be flying my C-150 from California. I'd like to check out Oshkosh for a day or two first, then drive a rental car from Oshkosh to Clinton, and drop the rental car off at Quad Cities, and depart Quad Cities via commerical airline for home.
What's the best big airport to arrive -- via commercial airline -- near Oshkosh, that has rental cars?