https://www.autosport.com/indycar/news/montoya-rules-out-2018-indy-500-concentrates-on-imsa-and-le-mans-5321593/5321593/
Montoya rules out 2018 Indy 500, concentrates on IMSA and Le Mans
Penske's Juan Pablo Montoya will not make a sixth Indianapolis 500 appearance in 2018, Autosport has learned
2018 indy 500
https://www.wrtv.com/sports/indianapolis-500/race-fans-line-up-to-buy-tickets-for-2018-indy-500
Race fans purchase 2018 Indy 500 tickets
May 29, 2017 - This years Indy 500 may have just ended, but fans are already counting down the days until the 2018 race.
2018 indy 500race fanspurchasetickets