Concept cars play big role in lineup for auto show

Editors note: At the ongoing Auto Shanghai exhibition, BMW is premiering one concept model for the first time worldwide, one concept model in Asia and several of its most advanced models for the first time in China. The following is a roundup of some of the highlighted models that will be on display.

BMW Concept X4

A concept model that shows the company's foresight, the BMW X4 will make its world premiere at the Shanghai auto show.