If you imagine yourself tooling down the highway in a spanking brand-new 2005 car, the Greater Los Angeles Auto Show, now at the Los Angeles Convention Center through January 16, will fuel your fourwheel fantasies. More than 1,000 cars, SUVs and trucks are drawing car lovers from all over Southern California as auto manufacturers, rising to the public demand for added features and more miles per buck, have unveiled a series of new 2005 autos that are sleeker, leaner and more powerful than ever before.