This next step may take some practice (Mr. LAVA makes it look easy), but you need to lasso the lock with the slipknot.
Once you’ve got it looped, simply pull both ends to tighten the knot, and yank the lock into an unlocked position.
Unfortunately, horizontal locks are a bit more tricky, but you’re not completely out of luck!
To unlock a horizontal lock, you need to use a wire hanger. Untwist the hanger to make a hook, and then slide it down between the car’s weather stripping and the window. From here, you just need to jimmy the hanger until you find the locking mechanism.