I was sure you made a typo and meant 10000 feet, instead of 1000. But after checking, yeah, it makes sense to make the track shorter to avoid the cars reaching even more insane speeds.
Sorry for not answering your original question, but how could they dilute your ownership in the first company? Did you not have pre-emptive rights to also acquire more shares with the $1 price? Not sure how things work in the US.