Cats at the park????

I am transporting the kitten I rescued to his new home in Ohio after the PT meeting. He will be 8 weeks old then and is so far very well mannered. He will have his first set of shots by then and I will have Kaige's crate for him to be confined in. If it is not too hot out AND I have my van I can keep him in the van during the cay. But if it is hot out he'd have to be out to prevent heat poinsoning. Because of all the strange dogs I will obviously not be bringing him out of his crate.

Will this be a problem at all?