I ran into a DIAD problem today I couldn't figure out. I usually drive 2 different vehicles during a shift, one for air deliveries and a different for shuttles. Well, today I had just switched to "vehicle 2" in the diad and remembered that I forgot to enter my fuel info for vehicle 1. For the life of me I couldn't figure out how to switch back to vehicle 1. I remember this was as easy as using the big up arrow before the implementation of EDD.