Another method to control late deliveries could be that if any local assembler is unable to deliver all of the ordered cars (provided they do not stop bookings altogether) within two months from initial booking date, the duties levied on new/used CBU import of their principle's vehicles by private citizens and/or agents will decrease by 1% every 6 months or yearly for every 10% of late deliveries. Values/percentages can be altered accordingly as per need to encourage them.
e.g. if IMC is only able to deliver 60% orders within time; 40% orders will be delivered late. Accordingly, after every 6 months or complete fiscal year's completion, import duties on all CBU Toyota and associated brand (e.g. Lexus, Daihatsu) vehicles will decrease by 4%, to be repeated with updated data every 6 months or each fiscal year. It is punitive and will encourage these assemblers to deliver on time or else, loose their market to imports.
This will ensure that any fine/punishment is not just passed on to the consumer (regardless of consumer being willing or otherwise to pay it) but that the company itself suffers if it is unable to deliver. Subsequently, once they ramp up their production capability sufficiently, time period of delivery can be reduced to 1 month and then immediate delivery later on in due time.