Well, it may be chilly, watching a movie in the car... they may have to be clever about how to keep warm. It's practical, in that case. Just like Zemo is rather sure it's practical to gawk inside the window at all the watches like a child in a toy store.

There will undoubtedly be multiple things for Oeznik and for Zemo, possibly even for Steve still waiting to be purchased, but he fixes Bucky with a slight frown at the insistence. "I can't wear any of the watches I have right now, James. They're much too big. Besides-- Oeznik may appreciate a new watch."

... And Bucky, for that matter. That eight dollar Walmart watch is an offense to watches everywhere. "You can't say no when it's for Oeznik."

Not if he wants to bring him something nice back, at least. Right?