Exel, relax.
A good loudspeaker has a gap flux density (magnetic field strength) of about 5,000 to 10,000 gauss. Note that computer speakers have to be shielded to keep them from destroying the display on your computer monitor. 100 mG ( milligauss) is 50,000 to 100,000 times less than that. EMF which is the force of a magnetic field given of by an electric current has various characteristics depending on the frequency. At DC, the field is indistinguishable from the field of a permanent magnet or the earths magnetic field. EMF at microwave frequencies can damage tissue as the wavelength is long enough to penetrate skin and short enough to excite molecules. The Insight does not generate microwaves, but if it did, the floor of the Insight is aluminum and as such forms a Faraday cage (radio frequency shield). Only extremely low frequency wavelengths such as the switching frequency of the electric motor driver can get through. In the grand scheme of things these frequencies are akin to those radiating from house wiring due to the AC nature of our electrical system. Granted there are those who feel that we are all getting "nuked" by the power grid, but I'm not one of them. If you are going to lose sleep it should be about the high frequency EMF given off by the microwave oven, the color TV, the computer monitor, the switching power supply in the computer or my personal favorite; the microwave generator that people hold against their brain known as the cell phone :roll:
As for the Rotor of the IMA; its field is well shielded by the stator of the motor. However, if I were to remove it from the engine (which requires a special tool), and if I wore a pacemaker, I would not want to hold it against my chest as the field could theoretically damage the pacemaker. In practice a pacemaker should have shielding, but I believe Honda cautions against this for legal reasons.