Hyundai has unveiled its second-generation fuel cell vehicle based of the new Tucson SUV in L.A.. The truck should see service in fleet operations in the first quarter of 2005. One major advance over the first-generation fuel cell Hyundai Santa Fe include the ability to start in freezing temperatures. Many current fuel cell vehicles have trouble once the temperatures hit below freezing, but the Tucson has been tested at -20 degrees Celsius. Other improvements are longer range (186 miles) and top speed (93 mph).