That is the update when it was added and if you look at the definition from Google:
A car title is a form of payment (one that carries more weight than fiat currency) and it was in exchange for sex, so it is prostitution.
not questioning, the tag, and the definiton;
and it is also an exchange between consentig adults, (if you apply that stern a Job that requiers phisical activity can be seen as prostitution) if it is or not is up to the interpretation of everyone, just sharing how this specific scene felt.
another factor that it is also writen under US Law and Customs which at certain point differ from the rest of the world
again was not questioning the tag nor the definiton; just trying to skech out why I was wondering.