A blizzard of safety concerns surrounding Toyota has put the Obama administration in a delicate position as it seeks to avoid the temptation of boosting the fortunes of Detroit's struggling US carmakers by bullying the Japanese manufacturer too aggressively. Toyota has swiftly become the butt of jokes in the US. The talkshow host Jon Stewart this week dubbed the firm's pedal problems "the Toyotathon of death". Speculating on the reaction of the bosses of General Motors and Chrysler, Stewart said: "Boys, we're back in the game! All we had to do was have the leading competition become a death trap."...