[4] In 2019 KIC Motorsport announced that Lappalainen would drive for them in the inaugural season of the Formula Regional European Championship alongside Isac Blomqvist.

[6] His season would be much more successful, with the Finn scoring two podiums and finishing sixth in the drivers' championship, although Lappalainen was beaten by his teammate Patrik Pasma.

[14] Remaining with Emil Frey for a third successive season in 2023, the Finnish driver would concentrate his efforts to compete in the GT World Challenge Europe Sprint Cup alongside Giacomo Altoè, driving the new Ferrari 296 GT3.

[2] After two points-earning races at Brands Hatch to start the season off, Lappalainen and Altoè would score their first podium of the year in Misano, finishing second.

[15] After a pointless round in Germany the pair went on to finish inside the top ten in all remaining races, thus ending up seventh in the standings.