My once dormant Marin Hawk Hill has been resuscitated thanks to the Mechanics in Motion class at school under the tutelage of master mechanic Twinkle Toes. Transformed into a slick single speed, I was able to get out for a ride this afternoon and test a bike that brought back memories of a simpler time of riding. No thoughts about shifting into the correct gear to ride up an incline or to gain speed down a hill. Just one speed. Fun.