I didn't say it was OK in any way...
In some ways it's the same, but in so many others, it's really different to park a boat on a beach compared to a car in a parking lot. Conceptually, it's totally the same, but actually, it's just very different.
For example, no one breaks into cars to have "relations" (maybe a pickup bed?), cars can't be pushed onto a freeway to see what would happen, etc...
Mike