Aziza is the sole owner of Azi’s Fast Pizza. During the current year, Azi’s replaces its fleet of…

Aziza is the sole owner of Azi’s Fast Pizza. During the
current year, Azi’s replaces its fleet of delivery vehicles. Aziza’s son
purchases one of the old vehicles for $500, its tax basis to Azi’s. Similar
vehicles are sold for $4,000. What tax problem is posed by this situation?
Explain who, if anyone, should report income from the transaction.