The smart contracts will also be able to adapt to all types of transport and to any kind of smaller niche of the market. It's interesting the choice to use Erc223 over Erc20 token, that, other than promising to reduce the need of gas for tx, seems also more appropriate for the intended use of the utility token cargo.
Many users don't trust smart contracts, however, if developers are able to provide all data on them, then many will have no questions and doubts in this respect.
Well, the smart contract is some way reliable like if you are using myetherwallet or metafox when to know these two are trusted and the majority of people only use this two as primary storage for token contracts and also ETH.