The 2020 Mazda CX-30 that arrived in the U.S. on Wednesday at the 2019 Los Angeles Auto Show raises big questions about small crossovers in the Mazda lineup. It would seem as if the larger CX-30 would replace the CX-3 subcompact crossover, but instead it slots between the CX-3 and CX-5, Mazda spokesman Drew Carey told us on the show floor. The new...