zeno says khartoum is a quiet city between two rivers which give the place a special charm but one problem is the lack of cleanliness in many areas very serious in concepcion in chile where rush hour traffic is a big problem he'd like to see an overhead railway system to relieve the pressure on the street. thank you for all you can. most big cities struggle with traffic congestion and car emissions could images like these one day be a thing of the past what's needed is an environmentally friendly alternative to gasoline and diesel. which could come in the form of electric vehicles we meet an engineer who's not only designed his own electric car he's also forging ahead with manufacturing and. there it is again acceleration you could use your driver's license in a car like this you just want to speed up a little but then you look down and it's just topped the gas but now i'm doing over seventy. that's not good in traffic. certainly not in town anyway going to shooting signed go of the city car it began as a study at athens technical university the professor and engineer was determined to see