Union Minister Nitin Gadkari on Tuesday asked automakers to build flex-engine vehicles for using alternative fuel. Road Transport, Highways and Shipping Minister Nitin Gadkari, talking to a delegation ofcarmakers from the Society of India Automobile Manufacturers (SIAM), on Tuesday stressed the need for indigenous technology for flex-fuel vehicles. "Gadkari has urged car manufacturers to give priority to the indigenous production of flex engines, which can be used in vehicles using alternative fuels such as ethanol," the Ministry of Road, Transport and Highways said in a statement. The minister said that with ethanol beginning to be easily available in the country and over 70 per cent of gasoline consumption being done by two-wheelers, there is a need to develop indigenous technology for flex fuel vehicles.