https://www.hertzcarsales.com/used-cars-for-sale.htm?start=0&geoRadius=100&geoZip=38801 indicates that if interior room is your priority, $17k-18k plus whatever tax will get you a 2019 Dodge Grand Caravan (minivan). Hot seats are optional, so you may have to look on or near the HVAC control panel to see if the controls for that are present.