US regulators consider stricter strength-to-weight standard
                                
                                
                                    (Newser) -
                                    Three-quarters of vehicles on the road today would fail a proposed tougher standard for automobile roof strength, reports the Wall Street Journal. The current standard, unchanged since 1973, requires that car roofs withstand a force equivalent to 1.5 times the vehicle’s weight, but it exempts those more than...