When the Zoey 101 star and her fiance, Casey Aldridge, 18, were photgraphed in his vehicle (Rhino) on April 6th in Liberty, Miss., just after her birthday, fans of the teen feared that the off-roading might harm the baby. But Jamie Lynn wants to set the record straight. "I would like to clear this up," she says. "It is not a four-wheeler - it is a five-by-five
. it has tires and rims, which makes it a lot smoother. I would not be on a four-wheeler because four-wheelers are bad for the baby. This is just like a car. In fact, if you put the right tires on them, they're smoother than a car and they don't go faster than 10 miles an hour."