General Motors Corp., focused in recent years on bolstering its pickup and sport-utility lineup, laid out plans to become competitive again in the brutal entry-level car market. GM North American chief Ronald Zarrella said in a speech during the Specialty Equipment Market Association show that the world's No. 1 automaker will introduce seven new entry-level vehicles in the next four years. GM's product blitz includes: -- A new midsize Chevrolet pickup produced jointly with Isuzu Motors Ltd. The pickup will come in a variety of cab and bed configurations and will replace the S-10 as Chevy's entry-level pickup. -- A new line of Saturn S-Series sedans and coupes. Saturn has already announced it will produce a car-based SUV. -- A new Chevy Cavalier that is being developed alongside the Opel Astra. -- A “segment busting” Chevrolet crossover vehicle that Zarrella said will bear "more than a little relation" to the Chevrolet Traverse concept vehicle that GM showed first last year. -- A Pontiac crossover vehicle aimed at young consumers. The vehicle, developed with Toyota Motor Corp., is likely to replace the Sunfire, which Zarrella hinted would be discontinued.