Replying to Save for car or Ski trip?

I'll try to keep to keep this short, but I can't guarantee it..

So through the traditional ski bum job of cutting grass for the 2nd year, I managed to save $2500 over the course of last summer before I went back to school in September; it's purpose was to buy a car. Specifically, I wanted to import a 1999 Subaru Legacy Touring wagon; the end goal being ~$5000 est. after all necessary costs are taken care of. I'm Canadian so it's legal as of this year. But suddenly, my shit HP laptop went into a permanent death-sleep, so my hand was forced to blow $1000 on a new, better, desktop PC. Double edged sword deal, I mourned the loss of cash, but I got a much wanted upgrade.

So now I only have $1000; I blew through the extra $500 for christmas gifts for myself and friends/family...but mostly me.

Studded bike tires, YEEYYUUH.

However, I'm considering possibly going on my local university's annual ski trip, occurring this February for $640. That includes bus transport to and from the resort, a room in a hostel, and 4 days of skiing.
I took the trip last year, the destination being Fernie, and as my first time skiing at a real mountain resort, it was easily the happiest time period of my life. When it was all over, I was super depressed for a couple days, having to go back to literally skiing a ditch.

This year, they're going to Kicking Horse, and it's sure to be another awesome time. But I'm at a financial crossroads here...wondering if I should stick with my initial goal of saving for a car, or take the trip, and recuperate the lost funds afterwards for which I can save for that Legacy.