These t-shirts are going to be given to our production crew and the goal is to make something cool enough for younger college guys to actually want to wear them.
These shirts are not going to be sold, so they do not need to be limited to purely demonstrating what we do. The most important thing is that they look good - feel free to incorporate anything that comes to mind that might fit this demo...beer, parties, social media, mobile phones, traveling, surfing, action sports, cars, movies, etc.
Consider "vintage" worn, "gym tee" styles. Would prefer a one or two color limit.
About us in case you are curious: CarCareKiosk provides how-to videos for basic car repair. We show how to change cabin air filters, flush coolant, jump start your car, etc. and our users tell us that they feel empowered using our site.
Our hand models all wear black surgical gloves and this is our signature appearance. An interesting idea might be to integrate hands in gloves into the design, but this is not necessary. Visit http://carcarekiosk.com to see our videos (they're free).