Although I am a hard-core techie (I design computer chips and teach the Verilog hardware design language to support my family and my hobbies), I cannot think of any advance in bicycle technology which would be as valuable as improved accommodations on our roadways and enhanced accountability and skill level for motorists.
Lightweight, resilient, puncture-proof tyres would indeed be very useful. As much as I like the Tiptronic transmission in my car, I see no benefit whatsoever to an "automanual" or fully automatic transmission on a bicycle.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069