A matter of time

I live very close to work. This is good, because lately almost every weekend I'm making up for lost driving time. Today I realized I'm smack in the middle of five weekends of Illinois. This stretch comes directly on the heels of the D.C. trip (though at least I reached D.C. by plane.) I bought my car in 2003, and it has over 110,000 miles on it. I haven't had any catastrophic problems thus far, but how much longer can I stay lucky? Should I start a pool on where I'll be when the car just quits? My money's on I-90.