IFRS 16 – Identifying a Lease or not

I went through Example 2: Identifying a lease

I looked at scenario 2, and it mentioned “specified quantity of goods.” I wanted to ask you whether this type of restriction on the use of the asset would need to be considered on determining whether the contract is a lease or not??

For example lets say the rail car had a storage capacity of 4 tonnes of goods and Peach could only store a maximum limit of 2 tonnes of goods on each journey. Would this restriction need to be considered to determine whether the entity can receive substantially all the economic benefit from using the asset??