Dodge 2008 Dakota Owner's Manual page 328

328 WHAT TO DO IN EMERGENCIES
If the vehicle is to be towed more than 15 miles (25 km )
or faster than 30 mph, it must be towed on a flatbed, or
with the rear wheels raised and the front wheels on the
ground, or with the front end raised and the rear wheels
on a towing dolly.
NOTE: Towing the vehicle, with the rear wheels on the
ground, at more than 30 mph (50 km/h) or for more than
15 miles (25 km ) can cause severe transmission damage.