Try travelmath.com for a breakdown of not only fuel costs but driving time and mileage too. We're planning the long drive too in Oct. from Corpus Christi. I'm so dreading it as I'd rather fly and be done with sitting still. I hope you have a pleasant drive down to FL and back. Maybe flight prices will come back down and I can fly instead (keeping fingers crossed). Otherwise I guess I get to join the 2000 mile club too. I love to travel I really do, but I get sit-itis something terrible after about 45 minutes. My mom's term, I didn't make it up, really. Anyway, happy traveling!