Lamborghini Urus, on display during the Moscow motor show on Aug. 29.Yuri Kochetkov/European Pressphoto Agency Lamborghini Urus, on display during the Moscow motor show on Aug. 29.

In which we bring you motoring news from around the Web:

• Bentley and Lamborghini, each having introduced ultraluxury crossover concepts in 2012, may be forced to sit on their production plans until economic conditions brighten for Volkswagen Group, the parent of the British and Italian marques. The Bentley EXP 9F and Lamborghini Urus concepts were officially introduced at the Geneva and Beijing motor shows, respectively. Reuters reported the models were up for review, along with other planned expenditures, according to two unidentified sources. (Reuters)

• Dale Earnhardt Jr., ranked 11th on points in the Nascar Sprint Cup chase, will forgo the series’ next two races after sustaining two concussions in six weeks, most recently last Sunday at Talladega, in a spectacular final-lap pileup. Earnhardt was informed on Wednesday by a physician that he sustained the first concussion on Aug. 29 at Kansas Speedway. The withdrawals effectively dash Earnhardt’s chances for winning the Sprint Cup championship this year. (The New York Times)

• Tesla Motors received a $10 million grant this week from the state of California to use toward developing and building the Model X, the crossover introduced by the electric-vehicle start-up in February. Tesla intends to hire 500 workers with the grant, as well as purchase equipment, to meet the automaker’s target production year of 2014. (Bloomberg)

• A grant of nearly $2 million was also awarded by the California Energy Commission to Zero Motorcycles, based in Santa Cruz, to quadruple its production capacity. The company introduced a revamped product line last week at Intermöt, an industry trade show in Cologne, Germany. (Zero Motorcycles, via Roadracing World)

By THE NEW YORK TIMES