Shares of CarMax getting wrecked after reporting earnings in revenue that miss analyst estimates. The used vehicle retailer stock down almost 20% hitting levels not seen since March 2020. For more, let's bring in CNBC's Phil Labau. Phil, what happened? What' they say about this? Melissa, there was nothing good in this report. Really, when you look at the quarter, almost every key metric was poor. And even on the conference call, the CEO said month by month, the quarter got worse. Now, they believe they're b ...