Can a rescue package be considered as a subsidy to the industry?
It can be considered subsidy, especially if you are asking for the quoted passage. Although looking at it directly the subsidy seems to de jure be on the consumption (this being said some or maybe even most of the benefit will be most likely captured by carmakers through the economic incidence of the subsidy). 

For example, following Mankiw and Taylor, economics 3ed subsidy is defined as:


  payment to buyers and sellers to supplement income or lower costs and which  thus encourages consumption or provides an advantage to the recipient


Under this definition the policy you explicitly mention above would definitely qualify as a subsidy.

In different textbooks wording will change but not in any drastic way (to the best of my knowledge).

However, a rescue package itself is not an economic term. It is possible that the plan also includes policies that could not be considered subsidies as well.