Alain and Nicolas Prost
Four-time world champion Alain (born 1955) is one of the greatest in F51 history with 199 wins in 1 races. Son Nicolas (born 1981) is v Formula E vehicles from 2015 to 2918 (third in 2016) and was briefly a test driver in F1.
Carlos Sainz st. in Carlos Sainz Jr.
Carlos Sr. (born 1962) is a rally legend - world rally champion in 1990 and 1992 with Toyota (26 wins from 1990 to 2004), plus three victories at Dakar with three different brands (VW, Peugeot, Mini). Carlos Jr. (born 1994) has been in Formula 1 since 2015 (he has scored 308 points in 111 races so far).