All but one, that is. The rotary engine did find its purpose, powering a delightful series of light, nimble, high-revving Mazda sports-touring cars. That may seem like an awfully small kingdom for an iron warrior that once looked like a world conqueror. But it's still a wonderful place to be.

The latest model in this series, the ingeniously engineered 2007 Mazda RX-8, drives like a sports car, with a high-revving engine and perfect 50-50 weight distribution for balanced handling.

Yet the RX-8 is surprisingly practical. It's capable of taking the kids to soccer practice, with passenger space for four full-size adults. There's enough room for a weekend's worth of luggage or two full-size golf bags, and the small rear doors and relatively spacious trunk make trips to the home improvement center possible. Granted, it's not as roomy as a sedan, but it can move people and stuff when needed; while moving the spirit as no sedan can.

In short, the RX-8 is a true four-seat sports car. It reminds us of the brilliant third-generation RX-7, but it's $13,000 cheaper, and its muscular styling has a zoom-zoom edge.

It's the small but powerful rotary engine that makes all this possible.

The RX-8 was launched as an all-new model for 2004. Its most significant update since then is the six-speed automatic transmission that arrived last year, replacing the previously available four-speed. In addition to two more gears, the six-speed automatic also brought steering-wheel mounted paddle controls for semi-manual shifting; and allowed the engine to be tuned closer to its manual-transmission specification, narrowing the performance gap between the auto-shifting and shift-it-yourself versions.

The manual and automatic models are two different cars. The six-speed manual benefits from 232 horsepower at 8500 rpm, while the automatic gets 212 horsepower at 7500 rpm, albeit with the same 159 pound-feet of torque at 5500. The base automatic comes packaged with a softer suspension, smaller wheels and smaller brakes. The bottom line is that the manual model is for driving enthusiasts willing to sacrifice some comfort and convenience for performance. The automatic is for drivers more interested in the look and feel of a sports car than in ultimate performance and for drivers who have to contend with stop-and-go commuting.

Changes for '07 are more modest. Mazda has promoted some of last year's various option packages to the status of separate trim levels. And a six-disc, in-dash CD changer is now standard at all but the base level.