The Van's RV-6 and RV-6A are two-seat, single-engine, low-wing homebuilt airplanes sold in kit form by Van's Aircraft. The RV-6 is the tail-wheel equipped version while the RV-6A features a nose-wheel. From Wikipedia
The homebuilt Van’s RV-6 aircraft crashed near a busy intersection close to Buchanan Field airport in Concord.