I'm assuming that extra weight and money is for safety devices?
Considering that roughly 75 percent of crashes over 55 mph in rural areas of our country end in fatalities and about 30 percent of urban area crashes in that speed range also end in deaths it is probably a really good thing that companies put better safety features in cars. Also considering that rollovers account for like 35 percent of all car accident fatalities it also seems like a better idea to make cars safer even if it costs a bit more.