Great idea Paricha Duangtaweesub ! Here are some issues you might want to consider and further elaborate on:
1) How long in advance are customers supposed to place their orders? You said in a comment that the vendor would like to know ahead of time (early morning for lunch orders), but most people don't actually think about lunch that far in advance. This could work for companies, but might not actually increase convenience for individual customers.
2) Some companies have maids who go to street vendors to buy food for employees to eat at the office. What are the incentives for customers to use Pinto 4.0 and pay the extra fee, instead of asking the maids to deliver food for them? Would environmental benefits be a compelling enough reason?
3) Is Pinto 4.0 going to operate during lunch & dinner rush hours only, or throughout the day?
4) One technical issue: If the service will be available throughout the day, how will the online platform manage demand vs supply in real-time (e.g. less wait-time during non-rush hour)?
5) Would be great to see more details and numbers on both revenues and costs.