Transport experts in Mumbai are petitioning the government to allow electric auto-rickshaws in the city, citing the vehicles' noiselessness and ability to carry more passengers per square metre of road space than cars. While some activists argue that the introduction of autos in the island city would lead to congestion and noise pollution, others believe the electric autos would be affordable, noiseless and environmentally friendly. The issue has been discussed several times in the past, with officials previously concluding that there should be no autos in the island city due to the potential for indiscipline.