There is a new sight on the streets of Havana: increasing numbers of electric vehicles whizzing among the old American cars so emblematic of the Cuban capital. As fuel shortages and US sanctions take their toll, and even though electricity generation can be spotty, Cubans are turning to smaller, cheaper, plug-in alternatives. “Gasoline? Imagine. After 50 years battling to get hold of it, I don’t even want to smell it anymore!” taxi driver Sixto Gonzalez, 58, told AFP atop the shining, electric-blue quadricycle with which he moves through the streets at a top speed of about 40 kilometers (25 mi…