New Roof Strength Standard in effect by the time first Chinese vehicles arrive (http://www.detnews.com/apps/pbcs.dll/article?AID=/20060821/AUTO01/608210335/1148)
New US auto roof strength standard is going to be raised from 1.5X vehicle weight to 2.5X, to reduce roll-over fatalities.

Fortunately, Chinese vehicles will probably fail this new test.

While cheap Chinese manufactured cars would fail, watch out for the medium-large Chinese Cars :)