Microprocessor Design/Superscalar Processors
In a superscalar design, the processor actually has multiple datapaths, and multiple instructions can be executed simultaneously, one in each datapath. It is not uncommon for a superscalar CPU to have multiple ALU and FPU units, for each datapath.
In this image, all the stages highlighted in green are executing simultaneously. As we can see from this image, there are two execution cores operating simultaneously.