Search - 40 Tons of Trouble (Women Who Dare; Harlequin Superromance, No 726)

Moving on down the highway...
That's all Cat DeAngelo wants to do, but it's getting harder and harder.
That's because someone's trying to ruin DeAngelo Transport. Cat's trucks have suffered a rash of break-ins, and a slimy competitor keeps underbidding her and offering to buy her out.
Worse, Cat's at odds with her sister and brother. They want her to get out from behind the wheel and take over the day-to-day running of the family company--from behind a desk!
Then Cat takes on a six-foot-five certified "hunk" as a temporary codriver and her problems really escalate!

Moving down the highway...That's all Cat DeAngelo wanted to do, but it is getting harder and harder. That is because someone is trying to ruin DeAngelo Transport. Cat's trucks have suffered a rash of break-ins and a slimy competitor keeps underbidding her and offers to buy her out. Worse Cat's at odd with her brother and sister. They want to get her out from behind the wheel of a truck and take over the day to day running of the family company-from behind a desk. Then Cat takes on a six-foot certified "hunk" as a temporary codriver and her problems really escalate!