Most cans are on edge, which is why they would tip over while driving This can, however, is safe, and can maybe even disappear in the spare wheel well. The people it bothers that a few drops spilling when you brings out the filler neck (Which in the interior of the canister will disappear) = I personally use these canisters is not a week, but for the worst-case scenario, I add a few drops are gasoline, regardless sincerely !