The prospect of a $100+ weekly fillup (with my weekly mileage) scares me. Put in perspective, that's $5,000+/year in gas alone. That's easily full university tuition for my 3 kids if you factor in 20% govmnt adds to your RESP and investment appreciation after 15 years!!!
If you don't have kids, that's your retirement money going literally up in smoke.
If you need it, go for it, if you want it, think twice - do you... really?