I drove 1800 miles in a Hydrogen Car

This is a very interesting and positive direction for automotive technology to take, but I do have one concern. These days we see a lot of advanced products failing to stay maintainable. How do fuel cell electric cars, and electric cars in general, compare to conventional ones in terms of repairability and maintenance? Once we have finished the process of implementing the infrastructure to support these technologies, will a local auto shop be able to fix a failed transmission or equivalent? Will a regular car enthusiast? How accessible will parts specific to these vehicles be for your everyday Joe who just likes to do his basic maintenance at home?