No. Most cars aren't even approximately watertight. There have been "amphibious" cars that are watertight on the bottom, to allow them to float, but even on these the door seals usually aren't completely watertight, and there's almost always ventilation of the passenger compartment somehow ... it may float, but submerge it and it would fill up with water.
Yes, it is it holds its butt closedOtherwise it wouldn't be able to float
In the olden days people covered the bottoms of wagons with waterproof canvas. This way, the wagon would float when they had to cross a river or pond.
The Bulkheads were separated into sections allowing it to float as well as the watertight doors to keep the water at bay but it didn't work.
bathysphere, caisson
Watertight means that when the lid is sealed, water cannot get into or out of the container.
6 watertight compartments
Watertight means that when the lid is sealed, water cannot get into or out of the container.
A sentence using the word Water tight could be "Is this seal watertight?" .
There are SIXTEEN watertight compartments on the titanic
USO Float
It did