Tata enters race for 100-mpg car

Tata Motors Ltd. of India has signed on as the first automaker to enter the Progressive Automotive X Prize competition. The privately funded $10 million prize, to be awarded in 2010, will go to teams that develop vehicles that attain at least 100 mpg and win a series of races designed to simulate real-world driving conditions. Vehicles that don't use gasoline must get the energy equivalent of 100 mpg.