Meaning?

In what context did you see these quoted expressions?

Hi,

Please find herewith the relevant texts :

1-At that moment an interior door opened and Judge Mostly ambled out. He wore a suit and held his driving cap in one hand.

2-He broke off when he saw Annabelle. his smile was instant.

Thanks

A driving cap is a flat cap, also called a newsboy cap, a Jeff cap, and other things. The great ex-Formula One driver Jackie Stewart always wears a plaid one.

He smiled the moment he saw her.

AHD "instant" adj., Def. 1. Occurring at once; immediate: instant gratification.

Thanks for the reply. I appreciate that, but still I don't understand why the cap is called driving cap? Further comments would be highly appreciated.