Multibeam on your car

Lincoln will sell the Ford Flex-based MKT crossover next year after a January Detroit show reveal. It will come in six- or seven-passenger variants and will add a plethora of high-tech conveniences, including Blind Spot Monitoring and Cross Traffic Alert System. The latter uses two multibeam sonar modules in the rear quarter panels that alert the driver with an indicator light on the corresponding outside mirror when another vehicle enters the blind-spot zone.
http://www.motortrend.com/future/future_vehicles/112_0811_lincoln_mkt_confirmed_mkz_refreshed/index.html