Alex Robertson Jr, 45, said he and his brother William smashed the windows of the two Mitsubishis after their father Alex Snr told him he would see f all from his winnings, giving him just 200 cigarettes.
Laura Hoyle, 40, and Kirk Stevens, 39, from Nottingham, won the jackpot in the National Lottery s Set For Life draw - a total of £3.6million split over 30 years.
Camelot s Andy Carter, the National Lottery senior winners adviser, has urged players to check their tickets for the winning six numbers as one player has still not come forward to claim £20million.