a number of environmental protection standards are also incorporated in tourism legislation governing greek companies hiring out cars and motorcycles to tourists measures which aim at renewing the motor vehicle fleet in different categories either via incentives to motor vehicle owners or via obligations which motor vehicle owners are required to meet financial incentives were provided up to december for the replacement of twowheel vehicles with models using new technology under law on motorcycles registered not later than and law for scooters registered not later than other measures aimed at renewing the fleet of public passenger cars