We love free things. Especially things we pay for all of the time. Like fuel. And if you own something like the titanic GMC Sierra Denali pickup, a tank of gas could mean as much as $120 or so in the United States. Travel to China, and things are slightly more expensive, which is why a Shanghai dealer is offering three years/five tons/2,000 gallons of fuel to whoever buys a Sierra Denali. That translates to roughly $8,000 of complementary gasoline. But chances are that’ll go to paying the truck off, as the $45,000-plus pickup costs about $134,000 in the Land of the Dragon.