Some carpool sites involve top-down proposals to get people to join 15 person carpools. Other sites match one individual with another based on coming from and going to the same general area around the same time. This site is different in that it offers commuters the opportunity to propose park and ride lots for their fellow employees based on what they find convenient. No capital investment is needed because the system uses vehicles and parking lots already available.

Conventional carpools usually have at least one rider who habitually sleeps late, causing others to have to wait and risking everyone arriving late to work. The “casual carpools” organized using this site involve commuters meeting at parking lots in their own neighborhoods, with drivers arriving at regular intervals during rush hour and picking up waiting riders. Riders save money on gas and parking, and can rest on the way back and forth to work. Drivers have their expenses offset by riders. Both riders and drivers get to know co-workers in their neighborhoods.