Weeaboos can't afford new cars? I'm actually not sure how true that is. Seems like they have plenty of cash to throw at figurines/costumes/waifu pillows/DVDs/etc. There are people who spend thousands on merch at Otakon every year. I imagine money tends to pile up pretty fast when you're an adult with a white collar job but no social life or family to fund.
That's exactly why they can't afford the new cars. They drive rust buckets because they buy all that plastic crap. I've seen weeaboo cars covered in weeaboo stickers that are pieces of crap.