cheaper air transport

if battery technology become a lot better 

then that could enable electric aircraft to fly long distances 

and fully autonomous electric transport aircraft 

would become very cheap to fly 

which could enable africa to sell a lot of food to europe 

africa could build airports side to side with industrial areas 

and those industrial areas would contain food factories 

that get food from farms in the areas around the industrial area 

farms could have milk cows that produce milk 

and food factories could turn milk into butter and cheese 

and farms could have animals that are sent to food factories 

to be slaughtered and turned into meat products 

all those food products would be transported from the food factories 

to the transport aircraft nearby and flown to europe 

and sold on the markets there 

semi trucks with products can't drive from africa to europe 

because there is no strait of gibraltar bridge yet 

and transport of food products by semi trucks and ship 

from africa to europe takes too long time 

which is a problem 

since most food products have relatively short expiration dates