Re: leasing a vehicle
Generally it's done through your work, since above $50-$60k mark, the tax breaks make it relatively cheap (i.e. only costs you 50% what it would otherwise - the rest is tax dollars you would have lost anyway). Usually you will need to be a certain level within the company before they let you as well.
Lease companies quite often have good dealer relations, and can get $5k or so off the list price of a vehicle . . .
The car doesn't have to be new (I think), but I think its much harder to get a lease on a second hand car.
All in all, its only the tax breaks that really make leasing worthwhile. Otherwise, its fairly much an expensive loan, and you don't end up owning the car at the end anyway (unless you payout the balloon payment at the end - probably 20% of the inital value of the car). Talk to your employer about it more (probably HR or Finance Dept's ).
Try a search on it here - there were some posts last year about leasing (some way of doing it very cheaply).