The time to complain about that would have been yesterday when they discussed the viewing for today or BEFORE the jurors were brought out to view the car---not after. The Judge was at the scene so they could have voiced their concerns beforehand. Too late now.
Kilgore was right on time to ask for a mistrial. Preserving the record for appeals. It's his job, and he's doing a magnificent job, imo, in a difficult case, with a miserable client and a judge who is transparently pro-prosecution.