Pack your tube in a pleated/Zip-lock bag as it will be easier to slide into your saddle bag and potentially be useful as a "boot" for a tire hole. It also is less likely to get hole poked in it while in your saddle bag.
Traffic is tough. Just imagine how much worse it would be if you had to drive a car.
What is a commuter bike? Well it depends on your commute. 10 miles to work? Quick spin to the coffee shop? Taking the kids to school? Downtown for happy hour? Regardless of how you define commuting, with Specialized, Scott, Redline, Seven, Linus and Electra in our line up, we’ll get you through the traffic.