Answers...

The Car logo - Maserati - Anil gets it right

Relate the two - well no one got it - the guy on the left is Klaus Klinsfield and the guy on the right is Peter Loescher. Basically, Klaus is the outgoing CEO of Seimens and Peter from Merck is gonna replace him

The caricature was Michel Platini - Avik got it

Relate the other two - Well, the guy on top was Zico and the guy below Kiatisuk Senamuang...well i dont expect you to know his name. The latter is a Thai of footballer of great fame, somewhat like Baichung of India. The connect is that both are known by the same name Zico.

And FYI - The original Zico's real name is Arthur Antunes Coimbra