Fascination of lifts

My Son is 3 and obsessed with lifts, Everywhere we go the trip revolves around them and it’s all he talks about in detail on repeat. If he can’t go in them all the time when out he has screaming meltdowns and gets no enjoyment from the trip even if something like soft play. He has suspected Fragile X, and ASD. 

Any tips to help engage him in other activities or interests? 

thank you