First, System test plan is prepared to make our self ready to prepare the entire system which is being developed from the scratch. System test plan is prepared only if the application or product is completely new. And the application or product need to undergo all type of testing like Functional, Performance, Load, Certification, UAT etc.
Second, Integration test plan is prepared if a product or application being developed by several team or several developers and if one complete module output is going to be as a input for another module, then this Integration Test Plan will be useful to plan accordingly. So when two systems being integrated the possibilities of issues are like software compatibility, input variable map etc. So these needs to be tested completed when its integrated. Hope its clear now.
In the European Union advertising has to show Carbon dioxide (CO 2 )-emission and fuel consumption data in a clear way as described in the UK Statutory Instrument 2004 No 1661.  Since September 2005 a colour-coded "Green Rating" sticker has been available in the UK, which rates fuel economy by CO 2 emissions: A: <= 100 g/km, B: 100–120, C: 121–150, D: 151–165, E: 166–185, F: 186–225, and G: 226+. Depending on the type of fuel used, for gasoline A corresponds to about L/100 km (69 mpg ‑imp ; 57 mpg ‑US ) and G about L/100 km (30 mpg ‑imp ; 25 mpg ‑US ).  Ireland has a very similar label, but the ranges are slightly different, with A: <= 120 g/km, B: 121–140, C: 141–155, D: 156–170, E: 171–190, F: 191–225, and G: 226+.