Thread: Car sick pup

My vizsla x pup is coming up 17 months and has started being car sick. He's been fine up until about a month ago but now if the drive in longer than 30-40 minutes he throws up.
He's been on a raw food diet since i got him and that hasnt changed.
I have side windows open so theres plenty of air flow in the canopy.
I'm at a loss for why it has started now, he's travelled heaps before with no issues.
Any advice on how to stop it would be much appreciated.
Cheers