Ride a Bike, Make a Difference. Here at Gregg's Cycles, we ride bikes. That's what we do. We understand that riding your bike can make a difference in many ways. Riding saves you money, it can save you time, it keeps you fit and helps the environment by keeping cars off the road. Most of you understand this as well. Trek Cycles is taking it a step further with their One World Two Wheels program. Trek, via One World