The mullet bus. Business in the front. Pure chaos in the back. No regrets.   We had just sold our sailboat. Maine winter was circling like a creditor. Our family of five — two adults clinging to the dream of being "adventurous people," and three children who had opinions about everything — needed a new plan. We needed warmth. We needed wheels. We needed, apparently, a school bus. There is a moment in every questionable life decision when you think: this is either genius or a cry for help . Buying a school bus and driving it across two countries with children inside it sits somewhere in that grey zone, possibly closer to the cry-for-help end. But here we are, on the other side of it, sun-tanned and slightly smug. We drove our converted school bus — a skoolie , for those not yet initiated — across the United States and deep into Mexico, and we are here to tell you it was one of the best decisions we ever made. Also one of the loudest. ...