Photos: Hydrogen car tech revs up Summary: Start-up develops sodium capsules that generate small amounts of hydrogen on the go. Plus: Make your own fuel cell at home. By Bill Detwiler | July 19, 2006 -- 11:34 GMT (04:34 PDT) Follow @billdetwiler Previous | Next Image 6 of 7 Focus gas gauge The gas gauge on the Ford Focus. Read closely. Topic: Start-Ups Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.