Are there too many cars in ITF?

[Joria]

In regular worlds if there are a lot of parking spots they fill up with random cars which eventually cause lag and can actually cause your game to freeze or crash.  I noticed the Plumbot Emporium has several parked cars in its lot.  In regular worlds you can use tce to hammer the parked cars and prevent the blockage, (and gain the value of the cars!), but you can't choose "Build on this lot", or "Buy on this lot" for that lot.  Does this lot fill up more or are those cars basically decor?