[article] Leo Grand considers himself lucky when the doorman at the luxury apartment building nearby lets him charge his Samsung Chromebook without issue. Trees for Cars — just launched this morning, and the new coder needs to make sure his computer is ready to go for the day. The guys in the apartment building have been a great help; four months ago when Grand started this venture, it was warm outside. That, unfortunately, is no longer the case. "Trees for Cars" is a mobile application that aims to save the environment by helping users carpool to their destinations, and Grand programmed the entire thing himself from the streets of Manhattan with just 16 weeks of coding lessons. It also provides information on how much CO2 the user is saving with each ride which further encourages environmental awareness, creating within the app a healthy competition amongst users to save the most CO2.