There is absolutely nothing wrong with financing a car purchase, especially using a HELOC, depending on one's financial and employment pictures. What if this person has money tied up in Treasuries, stocks, bonds, gold, pork bellies, has adequate life insurance, kid's go to State schools or their education is being funded by a 529 plan or similar method? Blah, blah, blah. It all depends, but prudent and reasonable leverage is just fine.
I took out my Kirkham yesterday aftrenoon for a 100-mile drive. Loved every minute of it. It almost makes me forget about the money spent on it.
