First let me state that I am new to the home brew world so this question may be completely dumb. I am wanting to brew a beer like the Grapefruit/Hefeweizen that can be found at Epcot. After doing some research it appears that it is actually half beer and half grapefruit soda. So my question is can I brew a standard hefeweizen, not add priming sugar, mix the hefeweizen and soda in the bottling bucket, and then age as if it had been primed? Would the sugar in soda cause fermentation in the bottle?