When her daughter is kidnapped at a local convenience store, Midge Phaeton must bring the sex trafficking to its knees, but when she is caught, and beaten to a pulp, she must outsmart the traffickers in order to save her daughter from being exploited or killed.

In order ?to fund their child's last chance medical treatment, a couple races across the country to deliver to an unstable drug cartel boss their customised hot rod within 24 hours while evading police and rival gangs.

latest rework, added a more compelling motive than financial ruin and replaced the "must race" by just races. Also as mentioned, the buyer is now an unstable drug cartel adding an extra level of danger.

A reason for the 24 hours could be the birthday of the son of the unstable drug cartel boss. The car is his birthday gift.

Agreed with the above, the stakes and the obstacles are not mentioned in the logline.

I would start it with a description of the bad guys threatening the couple and make it so the threat is what motivated them to sell the car. However, I still don't understand what's stopping them, or in other words, what will be their major obstacle.