Financier Rogers retired at 37 and motorcycled around the world, turning the trip into the book Investment Biker, a hybrid of business advice and travelogue. That journey, however, failed to squelch his wanderlust. Instead of enjoying his sedate life teaching finance, Rogers decided to take his fiancée and a souped-up Mercedes on a frighteningly intense road trip: three years, 116 countries and 152,000 miles. Like the car that plowed through snow, mud, sand and highways on every continent, Rogers's memoir of the journey is its own breed. Although Rogers writes, far too briefly, of life-changing events like getting married and hearing of his father's death, the book has an uncommon level of detachment. Also, even though Rogers shares investment advice and observations about the planet's political economies, his thoughts are too general to serve as business lessons. The result is an adventure tale without heart and a finance book without teeth. Rogers tries to make up for this by describing experiences like eating fried silkworms and watching prostitutes caught in the world's sex trade. Mainly, though, he chronicles prosaic details, like taking car ferries and talking to border guards, and then riffs on politics, money, immigration and culture