Hard to tell for sure but that looks like drips of sealer that didn't soak in, perhaps because the entire coat was fairly dry so it just sat on top. It will fade away with traffic and weather, the question is how long it will take. I don't know the answer to that one. The alternative is to try removing it with a pressure washer or some other method.

You could just park the car over it. :-D

I agree it is drips from the sprayer, it will fade eventually. Not a very good job by the sealer guys. I wouldn't deem it to be a disaster, a disappointment but it isn't disastrous, a house fire is a disaster, or hurricane damage. Putting it in perspective might make you feel a bit better.