Klaus Doerrzapf, who has installed solar panels on his roof but has no plans to buy an emission-free car, is one of the reasons automakers such as Nissan Motor Co. won't recoup investments in electric vehicles anytime soon.

"It's too early," the 50-year-old manager at an electronics company said at the International Motor Show in Frankfurt, Germany. "Range and price are a problem. Battery life and charging times are also concerns," Doerrzapf said while checking out an electric-powered Focus from Ford Motor Co.

BMW, Volkswagen and Nissan partner Renault talked up their electric vehicles at the Frankfurt motor show as they rolled out a record number of models and began the search for a return on their development spending.