Make sure you have a scraper, snow brush, and jumper cables. Not only for your car, but you never know when you will see a little old lady who needs help. Better yet, the hottie in a tight sweater who needs a jump, start that is.
I also carry gloves, hat and wind breaker. Again, just in case I am out and get a flat, accident or the car just dies.
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03 GT, STB, GM HD sway bars, 35% tint, GE893(37watt)fogs, Flowtech Terminators, 180 T-stat, ZZP DP & PCM, Ceramic PLOG & Crossover, 18" glasspack, 2007 17" Mustang Bullits 235/55/17 Pirelli PZero Nero, 12" R1 D\S rotors, gutted air box, GTP radiator