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HTML5, which enables Web pages to mimic conventional software, also introduces new security problems.
The car is an engineering achievement, but it could easily be even more appealing.
Cars that park themselves and automatically convoy with other cars could reduce congestion and emissions.
The find could ease U.S. dependence on Chinese supply, but critics consider the announcement premature.
Alternative approaches replace the battery with compressed air or a flywheel.
Increasing mileage standards to 54.5 mpg won’t require major new technologies, say experts.
A GM-funded bus could reduce transit agencies’ fuel bills by 80 percent.
The automaker aims to bring a cheap hybrid technology used in some large vehicles to passenger cars.