Several automakers, including Nissan, foresee a comeback in entry-level compact carstriggered largely by rising fuel prices. "For the first time in many years," said a Nissan senior marketing manager, many shoppers are "giving serious consideration" to smaller automobiles. These marketing folks detect a "void" in the sub-$14,000 price range, noting that a new generation of young people, known as "echo boomers," will reach driving age soon. Nissan promises class-leading horsepower and torque for its new entrant, the Versa hatchback, along with generous interior space. Billed as a "no-compromises" value-priced offering that reaches beyond basic amenities, the Versa is surprisingly roomy inside. A sedan is due later.